PlayStation's competitor, Xbox Live, suffered a similar attack by Lizard Squad last week. The outage meant owners of the Microsoft(MSFT) console were unable to download apps, games, movies, and connect with other gamers.

Sony hack could lead to censorship

Lizard Squad warned more attacks were coming.

"Unlike Santa, we don't like giving all of our Christmas presents out on one day. This entire month will be entertaining," Lizard Squad tweeted.